--- xutils-dev-7.7~1ubuntu5.orig/xorg-cf-files/xorg.cf
+++ xutils-dev-7.7~1ubuntu5/xorg-cf-files/xorg.cf
@@ -1577,6 +1577,12 @@
 #  define DefaultGcc2i386Opt DefaultGcc2OptimizeOpt GccAliasingArgs
 # endif
 #endif
+ 
+#if HasGcc2 && defined(AArch64Architecture)
+# ifndef DefaultGcc2AArch64Opt
+#  define DefaultGcc2AArch64Opt -O2 GccAliasingArgs
+# endif
+#endif
 
 #if HasGcc2 && defined(AMD64Architecture)
 # ifndef DefaultGcc2AMD64Opt